Air cooling and conditioning means



March 5, 1935. MARR 1- AL v 1,993,013

AIR COOLING AND CONDITIONING MEANS Filed March '21, 19:52

.NNNINNN NNNNNNR ATTORNEY Patented Mar,- 5, 1,935

rrso stare 1,993,013 AIR COOLING AND CONDITIONING MEANS George M. Marr, New York, and Arthur 1. Man,

Brooklyn, N. Y., assignors to Air Conditioners, Inc., New York, N. Y., a corporation of Delaware Application March 21,1932, Serial No. 600,112

2 Claims. (01. 62-91.5)

The device the subject of this invention is intended as a means for cooling and to a certain extent at least conditioning the air in a room and a particular object of the invention is to cool the air for the comfort of the occupants of the room,

of coolness only by causing 'air currents which V increase evaporation and for that reason it is necessary to sit in .an almost direct draft from an ordinary electric fan in order to obtain therefrom the sensation of coolness. Such drafts are dangerous and often cause complications and discomforts much more serious than the heat itself. The object of this invention is to give to the electric fan a possibility of service not inherent 'therein, to actually obtain the efiect desired while slowing down the fan and to provide in conjunction with a fan or other air moving apparatus a portable cooling system that might be employed as a small portable unit or as a larger unit if desired and at the same time provide a means for, to an extent at least, reconditioning the air by removing therefrom certain of the toxic poisons contained therein or at least injecting into the air desirable and advantageous gases.

The following is what we consider the best means of carrying out our invention and the accompanying drawing should be referred to for a complete understanding of the specification which follows.

In the drawing: Fig. 1 is a side view, partly in section, of our device.

Fig. 2 is a front elevation thereof with the easing partly in section.

Fig. 3 shows a modification of one of the parts, and

Fig. 4a still further modification of the same part.

Similar reference numerals indicate like parts in all the figures where they appear.

Our device is provided with an enclosing casing and the casing that we show is an elongated box sectional member, the back 1 and the bottom 2 of which are normally closed. At 3 we show an upward projection, the formation of whichprovides a shelf portion 4. This shelf portion 4 is provided so that we may arrange a grille or openwork section 5 for the ingress of air into the casing and this construction has been adopted so that if the back 1 is placed against the wall, the air passage'wili not be interfered with.

The type of grille which we employ at 5 is shown at. 6 in Fig. 2 and this same grille is arranged overthe front of our casing as shownat 7, but it will be noted that the grille does not extend upward to include the upward projection 3. Any type of openwork grille may be employed in both of the places 5 and 7. I

Arranged within the casing is a fan 8 operated by a motor 9. Any type of air circulating means may be employed, but we have shown an ordinary electrically driven fan and motor.

Within the upward projection 3- is a cylindrical member 10, one end of which is closed by means of a permanent cap 11 and the other end of which is closed by means of a removable cap 12 having a handle or key 13 which serves as a means for removing the cap. The side 14 of the enclosing casing may have an opening 15 which may also allow for the entrance of air, but which may, if desired, be closed by means of a door not shown.

The cylindrical member 10 is supported by brackets 16 and 17 and extends practically the full width of the enclosing casing. It is our desire that the cylinder 10 be only slightly longer than the diameter of the fan blades and this is all that is necessary, as will be later discovered.

Secured to the cylinder 10 and in good thermal relation therewith, is a plurality of blades or fins as indicated at 18 and 19, thesereference characters 18 and 19 indicating only the outermost blades, but it will be noted that a series of blades or fins are arranged between the fins 18 and 19 and as later set forth the number will be determined by the particular requirements.

The blades or fins 18-19 extend downward from the cylinder 10 and into the path of the air from the fan 8. The cylinder 10 and the down-v wardly depending fins or blades 18--19 should be formed of copper or some other good conducting material and theblades and cylinder should be joined together by soldering or by securing in any way that will make of them and the cylinder an integral whole considered from the viewpoint of conductivity.

As shown at 20, the cylinder 10 is surrounded by insulating material such as asbestos, cement, cork or any other good insulator and this material is packed into the projection 3 and may be permanently arranged therein, as it is not necessary to remove it. The insulating material does not, however, surround the cap 12, as this cap must be removed.

Within the cylinder 10, we place a refrigerant and the refrigerant that we have employed with remarkable success is known as dry or carbonic ice, which is actually C02 gas expanded to form a snow which later is compressed into a solid. This commodity is known on the market under the broad term of dry or carbonic ice for the reason that when the material evaporates and gives up its cold, no liquid residue remains.

We call particular attention to a small, almost minute port 21, which extends through the cap 12. This port is'for the purpose of allowing gas which forms by the evaporation of the dry or carbonic ice to escape and the size of the port will determine the rapidity with which the dry or carbonic ice gives up its cold. The operation of the device is as follows:

The refrigerant being contained in the cylinder 10 will, by evaporation, cool the cylinder 10 and the fins or blades 18-19 secured thereto. The fan is then set in motion and air drawn through the mesh will be forced out through the mesh 7, having passed between the fins or blades 18-19 and being sufliciently cooled during its passage. The gas being ejected through the port 21 will join the air current from the fan and will be ejected with the cooled air, though should the gas actually pass out through the opening 15 in the casing, the same desirable results will be obtained as the gas will be ejected into the compartment to be cooled which is our desire, as CO: has certain exhilarating properties which are beneficial, but the quantity of gas discharged will never be sufiicient to cause distress.

In carrying out our experiments we have disranged in a manner similar-to the blades or fins 1819 and thereafter the gas enters a small cylinder 23 to be discharged through ports 24 in the of containerszfi and 26 are used, each being provided with gas ports as shown at 27 and 28 and these'cylinders are connected by means of a rod 29 and a second rod 30 extends away from the cylinder 27. This Fig. 4 shows two things, first that a cylinder such as shown at 25 may be placed directly in the path of the fan. This arrangement will take place only when rapid and excessive cooling is desired. It also suggests that the fins may be horizontally arranged if it is desired to do so, but we admit that at the present time and as a result of our present experiments, we cannot discover why horizontally arranged fins would ever be desired.

It' will of course a be understood that the evaporation of the refrigerant is the source of cold relied upon and therefore the speed of evaporation will determine the amount of air that may be passed through our deviceto obtain eificient cooling and therefore the size of the cylinder may be increased or decreased as desired, the number of fins 18-19 may be increased as may the area of the fins and the speed of the fan may be increased or decreased and any other such said fan and projecting into the path of the air current, said projections extending along the container for a distance approximately equal to the blade diameter of said fan and means under said projections for receiving the moisture collected on said projections from the air passing therethrough.

2. An air cooling means having in combination a cabinet having inlet and outlet ports, an air propelling fan within said cabinet, a dry refrigerant-and a container therefor within said cabinet, a plurality of projections secured to said container, closely adjacent to said fan and in the air current projected from said fan and means such as a perforated cap for securing said refrigerant in said container and allowing the escape of gas therefrom or the entranceof air thereto, and means for collecting from said projections the moisture removed from the air during its passage over said projections.

GEORGE M. MARR. ARTHUR P. MARR. 

